Not Recommended for New Design (NRND)


Laird tiny AC4490-1x1 radio modules put the power of wireless into the smallest, most cost-sensitive applications. Despite their small size, the modules can replace a mile of cable even in harsh industrial conditions. Using field-proven FHSS 900MHz technology that utilizes an unlicensed frequency band*, AC4490-1x1s reject interference, enable co-located system operation, and ensure data integrity. With the help of a unique transparent protocol (RF232), AC4490-1x1 integration is easy. OEMs simply solder the radio modules and antennas into place, then power-on. All frequency hopping, synchronization, and RF system data transmission/reception is performed by the radio module. The AC4490-1x1's standard TTL interface provides bi-directional communication in point-to-point and point-to-multipoint networks. A number of on-the-fly control commands accommodate varying wireless applications.


Wireless Specification
900 MHz FHSS
Chipset (Wireless)
TI CC1010
Antenna Options
Trace Pin
Antenna Type
External via SMT pad
Up to 48 (North America)
Connector Type
Dimension (Height - mm)
5.08 mm
Dimension (Length - mm)
25.4 mm
Dimension (Width - mm)
25.4 mm
902-928 MHz (North America)
Interface (Serial)
3V TTL, Data rate: Up to 115.2 Kbps
Logical Interfaces
Output Power
0mW-10mW variable
FHSS Wireless Protocol
One-byte system ID
Transmit Power (Max)
< 0.5 oz (< 15 g)
Product Type Technology OS/Software System Architecture Chipset (Wireless) Antenna Type Logical Interfaces Frequency Range (Min) Frequency Range (Max) Antenna Options Channels Compliance Connector Data Rate Dimension (Height - mm) Dimension (Length - mm) Dimension (Width - mm) Input Power Network Architecture Operating Humidity Output Power Power Consumption Power Consumption (Rx) Power Consumption (Tx) Protocols Receive Sensitivity Security Storage Humidity Weight Wireless Specification
AC4490-1x1 Embedded Module Proprietary RF (9xx MHz) Configuration and Test Software Hosted TI CC1010 External UART 902 MHz 928 MHz Trace Pin 32 Channels None SMT 76.8 Kbps 4.11 mm 25.4 mm 25.4 mm 3.3 V AC4490 transceivers can operate in Point-to-Point 10% - 90% 10 mW (20 mW w/3 dBi gain antenna) Up to 80 mA 28 mA 80 mA FHSS Wireless Protocol -100 dBm One-byte system ID 10% - 90% < 0.5 oz (< 15 g) 900 MHz FHSS

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Name Part Type Last Updated
Application Note - Enabling the Security Pane in the RAMP Configuration Utility All Application Note 03/01/2019
Application Note - Repeater Set-up All Application Note 03/01/2019
RoHS 3 - Bluetooth All Certification 01/04/2022
Hardware Integration Guide - AC4490 All Datasheet 05/16/2019
User Guide - AC4490 All Documentation 03/01/2019
User Guide - RAMP-AC Development Kit All Documentation 03/01/2019
LWS-SPEC-ac44901X1 0209 All Documentation 03/01/2019
RoHS 3 - RAMP ISM Modules All Certification 09/23/2021
Application Note - Enabling the Security Pane in the RAMP Configuration Utility AC4490-1x1 Application Note 03/01/2019
Application Note - Repeater Set-up AC4490-1x1 Application Note 03/01/2019
RoHS 3 - Bluetooth AC4490-1x1 Certification 01/04/2022
Hardware Integration Guide - AC4490 AC4490-1x1 Datasheet 05/16/2019
User Guide - AC4490 AC4490-1x1 Documentation 03/01/2019
User Guide - RAMP-AC Development Kit AC4490-1x1 Documentation 03/01/2019
LWS-SPEC-ac44901X1 0209 AC4490-1x1 Documentation 03/01/2019


Can I get true full duplex operation from the RAMP products (RM024, AC4490, AC4790, LT1110, CL4490, CL4790)?

In the Laird RAMP line of products there is a feature called Full Duplex that leads one to believe they can talk upstream and downstream simultaneously. This is not the case, Full Duplex in the RAMP products gives a dedicated slot within the frame to the Server or Initiator and the second slot or next frame to the Client or Responder. 

How do I return my ConnexLink Radio, AC4490/AC4790, RM024, LT1110 radio to its default settings?

In order to return the radio to its default EEPROM settings it is necessary to load a previously saved file containing the default settings to the Configuration Utility and write the changes to the radio. If you did not save the default settings to a file, prior to changing the settings, please contact Laird Support through the Support Portal to request a file with the default settings for the purpose of restoring the radio to its default configuration.

The "Show Default" settings view in the Laird Configuration and Test Utility should NEVER be written to the radio, as these are for reference ONLY. Writing these to the radio can result in corrupting the radio to a point where it can become unrecoverable. After viewing the "Show Default" settings, the radio settings should always be READ again, prior to writing any changes to the radio, to prevent this from occurring.

What is difference between AC4490/AC4790 product part numbers that end with -01, -02, -03?

The -01, -02, -03 at the end of the part number signifies the version of firmware loaded to the module.
These firmware versions are Regionally significant and apply certified for the regions listed:



Part Number Certification Region
AC4490-1000M-01 FCC IC/North America
AC4490-1000M-02* RCM/C-Tick* Australia
AC4490LR-1000M-01 Long Range FCC/IC North America
AC4490LR-1000M-02* RCM/C-Tick* Australia*
AC4490LR-1000M-03 Anatel Brazil
AC4790-1000M-01 FCC/IC North America
AC4790-1000M-02* RCM/C-Tick* Australia*
AC4790LR-1000M-01 FCC/IC North America
AC4790LR-1000M-02* RCM/C-Tick* Australia*
CL4490-1000-232-01 (RS232) FCC/IC North America
CL4490-1000-232-03 (RS232) Anatel Brazil
CL4490-1000-232-SP-01 (RS232 - Starter Pack - Includes 2 units) FCC/IC North America
CL4490-1000-485-03 (RS485) Anatel Brazil
CL4490-1000-485-01 (RS485) FCC/IC North America
CL4490-1000-485-SP-01 (RS485 - Starter Pack - Includes 2 units) FCC/IC North America

*RMC/C-Tick Certified modules/ConnexLink must be purchased through Tekdis as they hold the certification.